Oracle Database includes a good selection of datetime format elements. that enable us to format dates and times when using the TO_CHAR(datetime) function.
One of these (the YEAR format element) allows us to format a date with the year spelled out. For example, instead of 1972, we’d get NINETEEN SEVENTY-TWO.
We can also use SYEAR so that BC dates are prefixed with a minus sign (-).
MariaDB has a lc_time_names system variable that controls the language used by the DAYNAME(), MONTHNAME() and DATE_FORMAT() date and time functions.
Here’s how to set the value of that variable.
Continue readingIf you’re getting SQL Server error Msg 529 that reads something like Explicit conversion from data type int to xml is not allowed, it’s probably because you’re trying to perform a data type conversion that’s not permitted.
SQL Server doesn’t allow certain conversions. If you try to perform such a conversion, you’ll get this error.
Continue readingBelow are 4 functions that enable you to return the month from a date in MariaDB.
Continue readingIn PostgreSQL, we can use the IF EXISTS clause of the DROP TABLE statement to check whether the table exists or not before dropping it.
The following SQLite examples return only those rows that have numeric values in a given column.
Continue readingIf you’re getting SQL Server error Msg 8116 with the message Argument data type varchar is invalid for argument 1 of session_context function, it’s because you’re passing the wrong data type to a function – in this case the SESSION_CONTEXT() function.
Below are three ways to return time zone information from a datetime value in Oracle Database.
Continue readingYou can specify the character set and collation at various levels in MariaDB. You can specify them at the connection level, the server level, the database level, the table level, and even the column level.
You can also specify a collation in your queries so that it overrides any collation that has been previously specified at the aforementioned levels.
Continue readingBelow are two options we can use to return a list of functions in MySQL.
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